Swaging-machine



(No Model.) 2 sheets-sheet 1. A. I. JACOBS.

l SWAGING MACHINE. N0. 514,147. f Patented Feb. 6, 1894.

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, SWAGING MACHINE. Y

'110. 514,147. Patented Feb. 6, 1894.

UNITED 'STATES PATENT OFFICE.

ARTHURAI. JACOBS, OF HARTFORD, CONNECTICUT, ASSIGN OR TO THE POPEMANUFACTURING COMPANY, OF-` BOSTON, MASSACHUSETTS.

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SPECIFICATION forming part of Letters Patent No. 51 4,147, datedFebruary 6, 1894. l Y Application led September 5, 1.892. Serial No.445,110. (No model.)

To all whom it may concern.'

Be it known that I, ARTHUR I. JACOBS, of Hartford, in the county ofHartford and State OfCQnnecticut, have invented certain new and usefulImprovements in Swaging-Machines, of which the following is a full,clear,

y and with slight wear of the operative parts.

section to show construction.

To this end myinvention consists in the details of theseveral partsmaking up the machine as a'whole and in thecombination of such parts asmore particularly hereinafter described and pointed out in the claims.

Referring to the drawings: Figure 1 is a detail front View of the headof the machine with part of the face plate broken away to showconstruction. Fig. 2 is a detail end view of the head with parts brokenaway in central Fig. 3 is a detail topor plan viewV of the machine withlparts broken away. Fig. 4 is a detail side view of the machine withparts broken away. Fig. 5 is a detail View in elevation of part oftherear end of the machine.

In the accompanying drawings the lettera denotes the headof the swagingmachine that is mounted on any suitable stand or support b inline with astandard c, a Yshaft d extending from the head to the standard andsupported in suitable bearings. The guide rods e e extend lengthwisebetween these partsa and o and serve to make up part of the frame of themachine on which certain operative elements are supported." Fast to theshaft d is a pulley d by means of which the shaft is driven and a pulleycl2 connected by a belt f to a pulley d3 serves as a means oftransmitting the rotary movement of the shaft d toa sleeve to which vthepulley d3 is secured. This sleevefis splined to a feed screw g. so thatmainelement in the feed mechanism by means of which awire h, or otherpiece of metal, is

ally supported onthe carriage t'.

drawn lengthwise between the dies that are borne inthe head of themachineand a carriage vl secured to the end of the feed screw issupported on the guide rods e e. On the endof the feed screw beyondth'e'carriage is a clamp j composed preferably of the jaws j jz havinglevers extending back with inturned ends arranged to make contact withthe wedge js that has a sloping or cam surface and is connected to thewedge lever 7c that is pivot- By swinging the lever forward and back thejaws of the clamp may be opened and closed. With the parts in positionshown in the drawings the clamp is holding the end of the spoke or wireh.' A spring j4 interposed between the end of the wedge ja and ashoulder back of the head of the clamp operates to hold theY clampnormally closed upon the work. The carriage e is secured to the feedscrew by means that permit the latter to rotate freely in the socketthrough which it passes, but to move the carriage lengthwise with thelengthwise feeding movement of the screw. This lengthwise movement ofthe feed screw is eected by means of a nut Z that is fast to a part ofthe lever t and is mutilated or cut away on one side so as to permit itto belifted out of or thrown into contact with the feed screw whendesired. A spring latch m is pivotally secured to' the standard 'cwithits upper end held normally in a position that adapts the hooked end ofthe latch to engage the lug Z2 on the side of the lever whenever thelatter is thrown downward so as to carry the nut into operative contactwith the feed screw. This latch m is pivoted on a pin fast in thestandard cand a spring m coiled about the pinserves to hold the latchinposition to engage and hold the luglz. Thislatchmis trippedautomatically by the movement of the parts whenever the movement of thecarriage is arrested bythe stop deviceithat consists of a collar adjustablysecured to the guide rod 'e'. The levert is mounted on the guiderod e and held between an adjustable collar e2 and a spring e3, thelatter being located between one side of the lever andthe nearest faceof the standard. When the sliding movement of the carriage e' isarrested and the rotary movement IOC of the shaft g continued the leverZ will be drawn toward the standard and will pull the lug Z2 out frombeneath the hook on the latch 'm and this allows the lever Z to bethrown up by the recoil of the spring Z4 and thus carry the nut out ofengagement with the feed screw and stop its lengthwise movement. As soonas the nut is thus thrown out of engagement with the feed screw acounterpoise n acting 1o through a flexible connection n that passesover a pulley n2 on the frame of the machine and is connected to thecarriage or other part fast to the feed screw, operates to draw itforward so as to carry the clamp closely against the back of the head ain position to receive the end of a wire that is thrust between thedies.

The swaging mechanism proper comprises dies 1 and 2 supported in socketsin the head 2o and having their operating faces turned toward eachother. The dies are held in place by a face plate 3 that is secured tothe head as by means of screws. The dies as shown are made reversiblewith operative parts on z5 either end and with followers 4 and 5interposed between the dies and the hammers on one sideV and a toggle onthe other.

On the end of the shaft d a disk 6 is scoured so that it turns with theshaft, and on 3o this disk, that is located in a socket in the head, issupported a series of hammer rolls 7. These rolls are of a numbersufficient to enable each two of the rolls to be located ondiametrically opposite sides of a loosely mounted central roll S. Thesocket 9 is of a diameter that will permit the rolls to be looselyarranged within the socket when lying edge to edge. The rolls areloosely supported on pins 10. They are held in place by means of 4o acover plate 11 secured in place by screws or other convenient fasteningmeans.

In a position diametrically opposite to the dies or the follower thereis arranged an abutment 12 with a bearing surface locatedin the line ofmovement of the rolls so that when one of the rolls encounters theabutment the roll diametrically opposite encounters the end of thefollower (or of the die if the follower is not used) and forces the diedownward upon 5o the piece of metal held beneath its working face.

The disk 6 is turned with considerable rapidity and the rolls 7 are heldoutward by centrifugal force and in rolling contact with the wall of thesocket that thus causes the rolls to turn so as to present each time anew surface to the abutment or to the end of the die. This arrangementof the parts insures a greater durability of the rollers.

The dies are rendered adjustable toward and from each other bysupporting the lower die on a cam 13 formed on the surface of a shaft 11that extends through a socket in the lower part of the head and isprovided with 6 5 a lever 15 by means of which this shaft may be rocked.

The toggle 16 interposed between the cam on the shaftand the under sideof the die or of the follower serves as the means of translating therocking movement of the shaft into a rectilinear movement of the die.The weight of the lever tends to turn the shaft 14 so as to drop thelower die, the dies being held close together only when the arm 17 onthe outer end of the shaft is held by the trip 18 that is a bell cranklever pivoted to the side of the head.

The end of the arm 17 in the form shown rests in a notch or socket inthe outer end of the trip 18 so that as soon as this trip is rocked bymeans of the rod 1J the arm 17 is released and the dies separate by therocking movement of the shaft 14 due to the weight of the lever 15, orequivalent device.

The die se arating mechanism is connected to the lever carrying the halfnut which en gages with the feed screw by means of a rod p so as toprovide for the automatic release of the dies as soon as the feed screwhas reached the end of its run. The rotary movement of the feed screw gcauses the lever Z to move toward the standard as described as soon asthe movement of the carriage i away from the dies is arrested, and thissliding movement of the lever Z toward the dies pushes the rod p androcks the lever 18 to which it is connected. This rocking movement ofthe lever lifts the outer end of the arm 18 out of engagement with thearm 17 and permits the rocking movement of the shaft which allows thedies to separate automatically as hereinbefore described.

The abutment 12 that has been described is made of a material muchharder and of greater durability than that of which the head is composedand it is preferably used for the purpose of increasing the wear andaffording a more durable backing piece to sustain the force of the blow,the whole of which comes on the rolls and not upon the pins that supportthem. It is not essential that the abutment be used nor that it shouldproject into the path of movement of the rollers as its ofce can beperformed by providing a hardened bearing surface in the substance ofthe head or by lining the whole socket with a ring of durable materialas hardened steel.

I claim as my invention- 1. In combination in a swaging machine a headhaving a roll socket, a shaft supporting a loosely mounted central rollwithin said socket, a series of loosely mounted hammer rolls arrangeddiametrically opposite each other on opposite sides of the central rolland with their periphery in rolling contact with the wall of saidsocket, and a reciprocating die having a part projecting into the pathof movement of the hammer rolls, all substantially as described.

2. In combination in a swaging machine the head having a socket, a disklocated in the socket and borne on a rotary shaft, a series of hammerrolls loosely mounted on the face of the disk on central supporting pinsand ar IOO IIO

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ranged diametrcally opposite each other on opposite sides of a looselymounted cent-ral roller, and a reciprocating die arranged with an endprojecting into the path of movement of the rollers, all substantiallyas described.

3. In combination in a swaging machine a head having a socket, a diskarranged within v -path of 4movement of the hammer rolls and the coverplate secured to the head, all substantially as described.

4. In combination in a swaging machine the dies and percussive devicesfor operating them, the rotary and reciprocating feed screw bearing onits inner end a clamp, the clamp operating mechanism, the nut removablyconnected to the feed screw, the trip mechanism comprising the spring'latch with a hooked end engaging a lug on the lever that supports thenut, the movable lever, the spring operating to hold the lever in.engagement with the latch, the carriage borne onA the feed screw and thestop device for arresting the movement of the carriage, allsubstantially as described.

5. In a swaging machine in combination with reciprocating dies,` the dieoperating mechanism as described, the rock shaft bearing the cam andsupporting the lower die, the trip arm borne on the rock shaft and thecatch connected to the feed screw releasing mechanism whereby the diesare automatically separated at a predetermined time in the operation ofthe machine, all substantially as described.

6. In a swaging machine in combination with the reciprocating dies, thedie supporting and separating mechanism as described, the die operatingmechanism described, means for drawing the Wire between the dies whilethey are in operation, the Wire feed mechanism and the within describedtrip and stop mechanisms, all substantially as described.

ARTHUR I. JACOBS.

Witnesses:

CHAs. L. BURDETT, Jos. A. CANTIN.

